Stool



FIG. 1 is a front perspective view of a stool showing the new design ina lowered state;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a front perspective view of a stool showing the new design ina raised state;

FIG. 10 is a bottom perspective view thereof;

FIG. 11 is a right side view thereof;

FIG. 12 is a left side view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a front view thereof;

FIG. 15 is a top view thereof; and,

FIG. 16 is a bottom view thereof.

CLAIM The ornamental design for a stool, as shown and described.